Question about Harley Davidson XL 1200 S Sportster Sport Motorcycles

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Gas dripping out of vent tube. loses about 8oz. a day.

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  • wd4ity
    wd4ity Aug 04, 2010

    Which "vent" tube? Are you talking about the small tube on the bottom of your carb or some tube on the fuel tank?

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  • 11 Answers

Hi there,
Ok so is it a carb. motor?? If so sounds like the floats r stuck.
or adjusted wrong.
R U turning off the valve at nite after u have ridden??
Ck em out!

Have fun
Pat

Posted on Aug 06, 2010

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Posted on Jan 02, 2017

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1 Answer

Front axle vent tube leaks out oil


You are likely to get an oil 'mist' from a vent or breather tube -this is quite normal. The 'mist' cools around the breather and forms a small oily patch. on the axle casing.

Are you certain that the oil is coming from the vent tube and isn't due to a split in the metal casing or from the gasket/seal?

How much oil are you losing? The only other way you would lose oil is if excess pressure was building up inside the differential and to be honest, it's difficult to see how this would occur unless it has recently been over-filled with oil.

If there are drips of oil appearing on the ground underneath the axle/differential chances are that it's the cover seal or the pinion seal at fault. The pinion seal is where the driveshaft/propshaft attaches to the differential. The cover seal is the gasket between the metal cover where the filler plug is and the differential casing itself.

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Any complaints of saw catching fire?


Not really, but if you've had the issue, maybe the vent tube is allowing gas to be dripped into the carbuetor compartment behind the filter. Sometimes, when held horizontally, they will leak a bit out and older saws sometimes have the vent line to deteriorate from the alcohol in todays fuels causing a few drops of gas to escape. I've worn out two 041 Farm Boss saws and never a problem other than normal maintenance.

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Disconnected condensation drain on hot water heater.


Tankless or hybrid water heater?

Tankless gas must have special fitting between water heater and vent that has a condensate line fitting. Hot toxic vent gasses traveling up vent pipe cause acidic water vapor to form inside vent pipe that drips back down vent and drips onto heat exchanger and other parts eventually burning hole through expensive metal alloy heat exchanger, rendering tankless computer water heater useless after electric circuitry gets wet and shorts out.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#vent

Hybrid or heat pump type computer water heaters must have condensate drain connected to catch pan located just above storage tank and below compressor. Condensation can form on condenser coils and drip into catch pan where there is primary and secondary drain
http://waterheatertimer.org/Review-GE-Heat-Pump-water-heater.html#maintenance

Read product manual
Gene
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Apr 17, 2014 | Water Heaters

1 Answer

08, 1125r...Just bought it. On my first ride i noticed gas drips from tube on the back of bike opposite side from exhaust. I assume this is an overflow tube but it drips gas for 15 minutes after every ride...


It is a known issue - you can take it into Harley but last guy I knew with that issue - they had the bike for a month and gave it back to him no changes said they couldn't replicate the issue. The gastank on the bike is getting hot causing the gas to evaporate and create pressure inside the tank - hence the gas dripping out of the pressure vent. Some guys have put some heat insulation in between the side of the tank/frame and where the headers get close. Other guys just wrapped their headers with thermo wrap - seems to help tons.

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2 Answers

I have an old whirlpool gas water heater and the pilot will not stay lit.


Suspects include bad thermocouple, thermocouple slipped down and not in pilot flame, dirty combustion parts and pilot tube, dirty air intake, backdraft caused by other vent fans pulling air down water heater vent, water dripping down vent because of poor venting, air in gas line, low gas pressure, bad gas control valve, hot attic environment, tight house not allowing enough air:

Replace thermocouple:
http://www.youtube.com/watch?v=v0aBPsNg6vo
http://www.youtube.com/watch?v=xGQngzqrIEE&NR=1
Troubleshoot pilot:
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
Clean combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

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1 Answer

Rheem 22V50F1 pilot won't stay lit. Changed thermo couple & it lit, ran then went out. Let it sit overnight & it lit, ran then went out. What next? p.s. The unit is 5 years old. Thanks


If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube.
If flame is yellowish and small: then clean pilot tube and combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.

Open following links to read troubleshoot resources.
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

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1 Answer

Hey I'm new to Bikes I have a Yamaha virago 250cc 2003, and there is a tube that runs down the frame behind the front wheel and when I get back from riding a black oily liquid slowly drips out, the tube...


That is either the crank case vent tube or the Air Box vent tube. There is a tube like that on most motorcycles. You can attach a small plastic bottle to the end and it will catch the oil that drips out. I have a small bottle on my 2005 Vulcan 800 Drifter.

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1 Answer

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